A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-01-564-9532
NSN 5990-00-005-5215
NSN 5975-01-145-4891
NSN 6320-00-098-2858
NSN 6610-01-550-2368
NSN 5975-01-312-2136
NSN 5960-01-251-5995
NSN 6150-01-367-3093
NSN 6320-01-569-2672
NSN 5925-00-520-8063
NSN 5925-01-471-1761
NSN 5999-01-411-6758